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They are the best candidates because, if it is decided to mine T tons of total material at the end of a phase, mining the geologically optimum pit corresponding to T is certainly better than mining any other pits of the same total tonnage.
Acknowledgement This study is financially supported by the National Natural Science Foundation of China and by the Doctoral Program Foundation of the Ministry of Education.
[5] FRIMPONG S, ASA E, SZYMANSKI J, International Journal of Surface Mining, Reclamation and Environment. 16(2002 )134–143
[7] Information on http//interfaces.journal.informs.org/cgi/reprint/inte.1090.0492v1
[9] RAMAZAN S, European Journal of Operations Research. 172(2007)1153–1166

Joseph, Cavitation and the state of stress in a flowing liquid, In: Journal of Fluid Mechanics, Vol. 366 (1998) 367-378
Saleem, Effect of Tooth Geometry on Gear Pump Performance, In: Tikrit Journal of Eng.
Sciences, Vol.16, No.4 (2009) 20-27
Molnar, SAP warehouse management system for a warehouse of auxiliary material in the selected company, in: Carpathian Logist.
Krile, One Unequal Error Control Method for Telemetric Data Transmission, In: Journal of Electrical Engineering (JEEEC), Bratislava, Slovakia, Vol. 62, No. 3 (2011) 166-170

Research on Analysis Method of Fatigue Strength for New Type Crushing Ripper Based on The Composite Load Spectrum Fengyi Lu1, a, Xinxin Liu1, b, Gening Xu1, c 1College of Machinery Engineering, Taiyuan University of Science And Technology, Taiyuan, 030024, P.R.China alufengyi131@sina.com, bxinlxmeng@163.com, cxugening@sina.com Keywords: Crushing ripper; Multi-conditions; Cycle action; Fatigue strength; Finite element analysis Abstract.
Shanghai science and technology.2003 [4] Hongyi.
Mechanics of materials.
Journal of Taiyuan university of science and technology, 2007.28(1):32-26 [6] Yi.
Finite element and dynamics analysis and structure optimization of the bulldozer ripper. master's degree thesis of Taiyuan university of science and technology.2013 [9] Guangyi.

Material and methods Study site and sampling Baiyin (E103°54′-104°24′，N36°14′-36°47′）, a major non-ferrous metals mining and smelting base, is an important energy industrial city to Gansu province.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (41171391).
Journal of Hazardous Materials, 164, 2-3(2009), 1386-1391
Science of The Total Environment, 407, 5 (2009), 1551-1561
China Environmental Science Press, (1990), 317-379

Five half-scale of exterior beam-column joints studied in this experimental research simulated existing buildings in South Korea, which contains little or no transverse reinforcement in beam-column joint regions, wide range of beam longitudinal reinforcement ratio and low material strength.
Materials and test specimens To consider the low strength of concrete and steel re-bars used in the existing concrete frame buildings, all specimens were constructed with normal-weight concrete with the design compressive strength of 18 MPa.
About the authors: Cong Thuat DANG is a lecturer of Faculty of civil engineering at University of Science and Technology - The University of Danang, Viet Nam.
Natural Hazards and Earth System Sciences. 2010; 10:499-507
ACI Structural Journal. 2001 Jul 1;98(4):572-82.

Application of Ceramic Membrane Technology in Tungsten Fine Particle Concentration Process Wan-Fu HUANG1,2, Xiao-Feng WANG1,a,*, Xin-Dong LI1 and Si-Ming YAN1 1Faculty of Resource and Environmental Engineering, Jiang xi University of Science and Technology, Ganzhou 341000, China 2Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Ganzhou 341000, China a570564373@qq.com *Corresponding author Keywords: Tungsten fine particles, Tubular ceramic microfiltration membrane, Concentration, Recovery rate.
Ceramic membrane is asymmetric membrane made of a ceramic material, and multi-channel tubular shape, a large number of pores distributed on the wall, the particles in the liquid under pressure which greater or similar with the pore size of the membrane will be retained, the others less than the membrane pore size will through the membrane, then achieve the purposes: particle separation, enrichment and concentration [2].
Materials and Methods Material and Nature of the Sample The specimen for test use is selected from a tungsten mine overflow solution in southern Jiangxi.
Acknowledgement This research was financially supported by National Natural Science Foundation of China (No.41362003), Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (No. 2012BAB10B03) and the Innovation Fund Designated for Graduate Students of Jiangxi Province (No.YC2013-S182).
Application of Ceramic Membrane Filtrationto Remove the Solid in Nisin Fermentation Broth [J].International Journal of Food Engineering,2008,4(4):1~8 [8] Mohsen Abbasi, Abdolhamid Salahi, Mojtaba Mirfendereskiet al.

Collaboration Strategy Simulation of Multi-Agents for Pursuit-Evasion in Wireless Sensor Networks Li-Xin Guo1,a and Lei-Ping Zhao2 1 School of Mechanical Engineering and Automation, Northeastern University, Shenyang, China 2 College of Information Science and Engineering, Northeastern University, Shenyang, China a lxguo@mail.neu.edu.cn Keywords: Wireless sensor networks, Multi-agents, Pursuit-evasion strategy, Collaboration, Localization.
Acknowledgment We are grateful for the grants from the Program for New Century Excellent Talents in University (NCET-08-0103), the Scientific Research Foundation of China Postdoctor (20070420203 and 200801391), the Natural Science Foundation of China (50875041), National 973 Program (2007CB210305-2), the National 863 Program (2007AA04Z442), the Fundamental Research Fund of Central Universities (N090503001), and the Program for Changjiang Scholars and Innovative Research Team in University, China.
Wang: Applied Mechanics and Materials Vols. 16-19 (2009), p. 1133-1137 [14] L.X.
Zhang: Proceedings of Information Technology & Environmental System Sciences, (2008), pp.796-801
Zhao: Journal of Materials Processing Technology, Vol.129, (2002), p.539-544

., Hungary 2Nuclear Research Institute of Hungarian Academy of Sciences, H-4001 Debrecen, P.O.
Sepiol, Science 306, 1913-1915 (2004) [7] D.L.
Szabó, "Segregation in Nanostructures" in "Advances in Nanophase Materials and Nanotechnology" Vol.
Beke) special issue of Journal of Metastable and Nanocrystalline Materials, Vol. 19 (2004), p. 107 [14] G.
Tu, Mayer J.W. and Feldman, L.C., Electronic Thin Film Science, Mc Millian, London, 1992, pp 310 [18] J.

Impact Analysis of Tower Number on Automotive Live Load Effect in Suspension Bridge Zhigang QI 1,a, Jun DONG 1,b*, Baoqiang YAO 1,c 1 Beijing Research Center for Engineering Structures and New Materials, Beijing University of Civil Engineering and Architecture, Beijing, 100044, P.R.China a270994241@qq.com,bjdongcg@bucea.edu.cn,c1114665153@qq.com * corresponding author Keywords: suspension bridge, the number of towers, vehicle load, mechanical properties Abstract: As a bridge with a large span, suspension bridge has conspicuous advantage in the current cross-sea engineering.
Introduction With the advancement of science and technology and promotion of the globalization of the world economy, long-span bridges are rapidly developing.
In the construction process of bridge project in the broader straits waters, bridge construction techniques are raised higher requirements to achieve long span capabilities, and for the structural materials, bridge construction, design calculations represent a serious challenge.
Acknowledgements This work is supported by the Project from the Beijing Natural Science Foundation (No. 8142012), and by the Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges Under Beijing Municipality (IDHT20130512), and by the Project from the National Natural Science Foundation (No. 51378045).
A Journal of Hebei University of Technology, 2008, 37(2): 97-102 [2] Gimsing N J.

Computer Simulation of the Early Stage of Precipitation of L12-Ni3(Al,V) Using Microscopic Phase-Field Method Wei-ping Dong1, a* and Zheng Chen2, b 1College of Engineering, Zhejiang Normal University(ZNU), Jinhua, 321004, China. 2Department of Materials Science and Engineering, State Key Laboratory of Solidification Processing, Northwestern Polytechnical University (NPU), Xi’an, 710072, China.
The phase-field dynamic model has recently emerged as a powerful computational approach to modeling and predicting microstructure evolution in materials [9-11].
Acknowledgments This study was supported by the Zhejiang Provincial Natural Science Foundation of China (LQ14E010002) and the National Natural Science Foundation of China (51274167).
Cao, High pressure solidification microstructure and its stability of Al-9.6wt％Mg alloy, The Chinese Journal of Nonferrous Metals. 17(2007) 384-389